Warning in PHP 5.2

[sama55]

This warning was displayed. My environment is PHP 5.2. If movement warranty conditions of this plugin are more than PHP5.3, it is no problem.

Message:
Notice: Use of undefined constant PHP_ROUND_HALF_UP
Warning: Wrong parameter count for round()

Reference:
http://stackoverflow.com/questions/4948373/php-undefined-constant-php-round-half-down

Thanks.

[TohidN]

thanks for reporting it @sama55. I made an experiment and it turned out PHP_ROUND_HALF_UP doesn't have an effect on end result what so ever. so I removed it.
your participation is much appreciated.